DHI-ARD822-W2(868)-L

"Two-way RF communication. Provides multiple LED colors to indicate different statuses. Cloud update and automatic recovery from update failure. Offers accidental press prevention. IP54 rated."

"Frequency hopping and two-way communication technology ensure that communication is stable. Supports jamming detection and communication encryption. Supports cloud update and automatically restores when cloud update fails. Overheat and overload protection."